My gaming computer components

Here I made you a list on pcpartpicker.com
The site tells you the cheapest place to find the component you want and whether the parts are compatible.
The video card you have selected in weirdly very cheap on tigerdirect compared to the sites that pcpartpicker.com uses. I would check that out because it seems like either an amazing price or it isn't legit.
The ram that you picked was 1.65v which could potentially damage the ivy bridge processor. So I changed the ram over to 1.5v.
I also upgraded your hard drive to a 7200 rpm model. It was only $8 more and if you are using it as your only hard drive it would be a good idea.
What is your budget? I didn't change anything other than to make it compatible but if you have some money left I could make a couple changes that would definitely improve the build. I'm not an expert by any means but I just finished designing my first build and have done some really extensive research before I picked my parts. With an extra $50 you could make it a lot better in my opinion.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($189.99 @ Microcenter)
Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard ($134.99 @ Amazon)
Memory: Corsair XMS3 8GB (2 x 4GB) DDR3-1600 Memory ($44.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($67.99 @ NCIX US)
Video Card: Zotac GeForce GTX 560 Ti 1GB Video Card ($262.98 @ NCIX US)
Case: NZXT M59 - 001BK ATX Mid Tower Case ($57.98 @ Newegg)
Power Supply: Apevia 700W ATX12V / EPS12V Power Supply ($45.98 @ Newegg)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($24.98 @ Newegg)
Other: Rosewill RNX-N250PC2 Wireless-N Adapter ($19.99)
Total: $849.87
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2012-12-28 21:04 EST-0500)

Only parts I would recommend is a different PSU that's 80+ bronze like Corsair or CoolerMaster and GPU,try going with the Radeon HD 7850 instead due to there huge sale plus having more video ram which also makes it a bit future proof whenever games start going to 2GB of video ram,but that's my personal opinion